95 Blazer Heating Problems

[csboged]

Hello....I have a 95 blazer and I have already replaced the upper and lower hoses, water pump, thermostat and fan belt...I fill it with antifreeze or water and it goes for about 2 days and then the antifreeze is gone...no signs of leaking anywhere...I checked the oil and its fine, no milky substance, so I would say that it isnt the head gasket...what next...fan clutch possibly...the blazer runs about 160 and then goes to 210 then back down to 160 if I am in driving and stopping alot then it will run about 200 but then once the water is gone of course it heats up....my question is where is the water going? And how can I fix it permantly? Thanks for your help.

[Rick Norwood]

Originally Posted by csboged

Hello....I have a 95 blazer and I have already replaced the upper and lower hoses, water pump, thermostat and fan belt...I fill it with antifreeze or water and it goes for about 2 days and then the antifreeze is gone...no signs of leaking anywhere...I checked the oil and its fine, no milky substance, so I would say that it isnt the head gasket...what next...fan clutch possibly...the blazer runs about 160 and then goes to 210 then back down to 160 if I am in driving and stopping alot then it will run about 200 but then once the water is gone of course it heats up....my question is where is the water going? And how can I fix it permantly? Thanks for your help.

Welcome to the Forum. The Fan clutch has nothing to do with disappearing coolant. If you're not sitting in a steam cloud when you come to a stop, chances are you're right about the head gasket.

Go to Autozone and borrow or rent the Radiator pressure tester. It is basically a hand held tire pump with a radiator cap and a pressure gauge on it. Fill your radiator up with water and attach the cap/pump to the Radiator and pump up the pressure equal to the pressure rating of the original radiator cap. You will want to do this when the engine is shut off and cool and once it is pumped up, your leak should become very visible.

Be sure to check the carpet on the passengers side of the front seat to make sure the heater core is not leaking. Check all of the hoses, the weeper hole on the water pump, the front grill and front of the radiator especially across from where the upper hose fitting connects. Check the top of the engine itself around the intake manifold.

Post back with your findings.

[ken_man_1]

Do you notice any white smoke from the tailpipe? If so, then it's probably a head gasket. If you can, try pulling spark plugs and look at the color of them. If you notice any of them discolored the color of the antifreeze, then you've found the problem. Good luck.